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| * 2020/03/06(Fri) 16:00-(JST) * Regular meeting meeting (Japanese) |
* 2020/03/06(Fri) 14:00-(JST) * Regular meeting (Japanese) |
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| * Average ~250kpc BNS detection range | * Maximum 500kpc BNS detection range |
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| * 3/10 - commissioning break(?) | * If microseismic motion is large, we could not lock the interferometer * 3/10 - commissioning break |
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| * Maintenance day (2020/03/03) * I asked SEO about following works * If you have more request, please let Yokozawa or Washimi-san know first. * 1. (Highest priority from PEM team) * Go inside the mine and move the PEMs placed at OMC legs to next noise target. * Next target is under discussion(Candidate is IXC area). * Change the position of the speaker to around POP area * We don’t need the interferometer during this work. * 1 hour work. * Yokozawa, Washimi * 2. (If possible) * Go inside the mine. * Turned on the all FFUs(~5min) to evaluate the noise from FFUs. * If we can observe the noise from FFUs in the sensitivity curve, we can consider next target. * If we cannot observe the noise, current noise limit may not come from the sound inside the clean area. * We need the interferometer during this work. * 10min work * Yokozawa, Washimi * 3. (If possible) * Go inside the mine * Hammering test to the cryochambers and ducts and so on to investigate the vibration effects. * We need the interferometer during this work. * Also, the hammering test PR and IMC area is essential |
* Commissioning break (2020/03/10 9 am -03/24 9 am) * After the commissioning meeting, I and Washimi-san make the schedule. |
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| * PEM tasks during observation run | * PEM tasks March |
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| * Shaker and Acoustic injection * PSL, REFL and AS table injection again * Saturday afternoon(2/29) between the lock loss and observing state |
* Acoustic injection * Acoustic injection to PSL room was done * Acoustic injection to REFL table was done. * We set additional accelerometers to the leg of the MCF chamber ground, IMMT1/ISS and PRM chamber leg [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13293|klog13293]] * Analysis is ongoing by Washimi-san ant TTanaka-san |
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| * Seismic motion flag | |
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| * Set portable PEMs to the some point for the O3 run * Now, the legs of the OMC * Next target is IXC or PR2-BS or somewhere PRs or IMC area. |
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| * JPS (2020/3/16-19 @ Nagoya)-> Cancelled * Yokozawa, TTanaka |
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| * Core to core application * Miyoki-san suggested to visit Virgo to join the commissioning as the PEM team * If you have interested in please let me know * Other interesting conference? Deadline is 29th Feb. |
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| * Application of the author list * [kagra 03345] from Somiya-san e-mail * Deadline : 29th Feb. * エフォート率など相談がありましたら横澤までご連絡ください。 * PEM meeting * Tuesday may be a maintenance day * I want to move PEM meeting to Friday and discuss what should we do during maintenance day. * Earlier time is better? |
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| * Yokozawa * Discussion about the list of the general issue * Current line noise identification * PEM coherence search to the longer locked data * GND issue |
* Discussion about the list of the general issue (Yokozawa) * Bruco analysis (Yokozawa) * PEM coherence search to the longer locked data (Yokozawa) * GND meeting report (Yokozawa) |
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| * Washimi * Investigation the environment around the OMC area [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13181|klog13181]] -> [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13197|klog13197]] * Investigation the water pump [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13199|klog13199]] * |
* Acoustic injection result (Washimi, TTanaka) * Seismometer tilt coupling (Washimi, Miyo) |
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| * TTanaka * 23.3Hz noise investigation * Yuzurihara * Updated Pastavi * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12872 | Pastai update : Add button for h(t) channel, Taking overlap in PSD estimation]] * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13194 | Pastai update : Added mass-range estimation]] |
* 23.3Hz noise investigation (TTanaka) |
Weekly PEM meeting
- 2020/03/06(Fri) 14:00-(JST)
- Regular meeting (Japanese)
Web meeting with Zoom2 (Zoom2)
Agenda
General issue
- Interferometer status
- Observation run started without O3 joining
- Maximum 500kpc BNS detection range
- Lock duration is 1h -4h
- Alignment dependence
- Duty cycle ~65%
- We need ~1h for initial alignment
- If microseismic motion is large, we could not lock the interferometer
- 3/10 - commissioning break
- Commissioning break (2020/03/10 9 am -03/24 9 am)
- After the commissioning meeting, I and Washimi-san make the schedule.
- PEM tasks March
- PEM injection
- Acoustic injection
- Acoustic injection to PSL room was done
- Acoustic injection to REFL table was done.
We set additional accelerometers to the leg of the MCF chamber ground, IMMT1/ISS and PRM chamber leg klog13293
- Analysis is ongoing by Washimi-san ant TTanaka-san
- Acoustic injection
- Hammering test
Hammering tests to the OMC, SRs, BS and PR2 were done [http://klog.icrr.u-tokyo.ac.jp/osl/?r=13138|klog13138]
- There is large excitation when we touched the legs of the OMC chamber
- But we concluded that vibration of the logs of the OMC chamber were not the dominant noise source in the current sensitivity
- Next target of investigation is the duct between PR2 and BS
- Candidate of the 60-90Hz noise
- Discussion about the PEM flags
- This may not be used during O3 run, but it is good practice toward the O4 run
- Help the RRT(Rapid Response Team, quick discussion for the event submitted to the GraceCB)
- Seismic motion flag
- Evaluate the effect of the FFUs and vacuum pumps by turning on during interferometer lock
- If the excitation detected, we have to consider about the FFUs which are working.
- PEM injection
- Conference
F2F (2020/4/17-20 @ Kashiwa) wiki
Each progress
- Discussion about the list of the general issue (Yokozawa)
- Bruco analysis (Yokozawa)
- PEM coherence search to the longer locked data (Yokozawa)
- GND meeting report (Yokozawa)
- Acoustic injection result (Washimi, TTanaka)
- Seismometer tilt coupling (Washimi, Miyo)
- 23.3Hz noise investigation (TTanaka)